That's a lot of copper! I wonder how much that cannon is worth in copper alone xD Not sure. The copper was acquired at a lost freight auction. I picked up 60 feet (5 lengths) for $20. The valves and most fittings were either salvaged from plant retrofits or left over from other jobs. If I was going...

This is my first pneumatic. Specs are as follows: Storage: 22 feet of 2 inch "L" copper at 160 psi Barrel: 9 feet of 2 inch "L" copper, muzzle loaded with camlock quick connects Valve: 2 inch ASCO explosion proof solenoid modified to actuate via a 3/4 inch 120 VAC explosion proof ASCO solenoid Trigg...